V2.1 (08-Apr-2018) done by JOTD:
- fixed install script (looked for OSEmu, now removed, 3nme>sprites.bin renamed when installing) fixes
- added a check for file "3nme_sprites.bin". Stops with clear error message (instead of Guru) if not there
- removed "DEBUG MODE" (v2.0 was chipmem only debug slave which made its way into release)